BEGIN:VCALENDAR
VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:2
UID:UW-Physics-Event-6869
DTSTART:20220407T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T153412Z
LAST-MODIFIED:20220404T165700Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Encoded Silicon Qubits:  A High-Performance & Scalable Platfor
 m for Quantum Computing\, R. G. Herb Condensed Matter Seminar\, Dr. Na
 than Holman
DESCRIPTION:For quantum computers to achieve their promise\, regardles
 s of the qubit technology\, significant improvements to both performan
 ce and scale are required.  Quantum-dot-based qubits in silicon have r
 ecently enjoyed dramatic advances in fabrication and control technique
 s.  The “exchange-only” modality is of particular interest\, as it
  avoids control elements that are difficult to scale such as microwave
  fields\, photonics\, or ferromagnetic gradients.  In this control sch
 eme\, the entirety of quantum computation may be performed using only 
 asynchronous\, baseband voltage pulses on straightforwardly tiled arra
 ys of quantum dots.  The pulses control only a single physical mechani
 sm\, the exchange interaction\, which exhibits low control crosstalk a
 nd exceptionally high on/off ratios.  Exchange enables universal logic
  within a qubit encoding that is robust against certain correlated err
 ors.  These aspects collectively provide a compelling path toward faul
 t-tolerance.  HRL Laboratories has recently demonstrated universal qua
 ntum logic of encoded exchange-only Si spin qubits\, including two-qub
 it gates performed on arrays of six quantum dots.  In this talk\, we w
 ill introduce the fabrication and operation principles of these encode
 d Si qubit devices\, and we will show recent experimental results.
URL:https://www.physics.wisc.edu/events/?id=6869
END:VEVENT
END:VCALENDAR